colonelkeds

I hope it is that easy! I'll check it when I get back Monday. We're in the process of checking individual outputs in case it's a process failure, tripping the PLC off. The PLC controls about 10 processes on the machine..

Thank you for the offer, jrw, but we could fly you up here to a 4-star hotel and still save money from our quote, lol. North Carolina is actually where the machine distributor is (Adwood corp.), but they're not backing us up, nor the mfr. in Spain. Machine's been down 2 months now, crippling us.  And yes, Crossbow, our identical PLC is available new on eBay for under $300 last time I checked. I was told it was discontinued, but it is still available. I've read mixed opinions about being able to transfer software projects between PLC's;  most say can't do, some yes. It's software, so I see no reason can't be moved, unless corrupted. I have been studying how these work and are programmed, so I'll likely be the one to fix it. $8000 is current book vaue of our machine, err.... boat anchor.

Rodney, thanks for the reply, I did see the special cable requirement. Siemens also has an excellent step 7 microwin .pdf manual specifically for the s7-200 that I'm studying. jrw, we are near Springfield, Ma.,   

After a little searching....Looks like I need to download Step7/Microwin and start with my PLC's diagnostics buffer. Yes?

I'm new to this forum, and hope for help. We have a woodworking edgebanding machine (Cehisa, made in Spain) that stopped resetting (starting), a tech diagnosed a bad PLC because all its led's were flashing. Cehisa owns the software, so they are only source to upload the project. They quoted us $7500.00 + $100 shipping for a replacement (!!!). Problem is, even if we paid this , the replacement could also fail if it's an internal or external component problem. Siemens tech suggested a power supply issue possibly.  ( I put PLC in Stop, disconnected all outputs and lights stopped flashing. Can anyone suggest steps to meter test & "possibly" save the one we have? Spain, our US distributor, and our tech stopped communicating (they all say buying the new one is the answer). I have some electronics background, have and understand our machine's schematics but not versed on PLC's. Sorry for long-winded text.